Synthesis of ZnWO4 by the polymerizable complex method: Evidence of amorphous phase coexistence during the phase formation process
| Autor: | Eliezer C. Silva, Magda S.S. Gondim, Edson R. Leite, Ananias Lima dos Santos, I. C. Nogueira, José Manuel Rivas Mercury, Marcelo Assis |
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| Rok vydání: | 2021 |
| Předmět: |
Complex oxide
Materials science Process Chemistry and Technology Mechanism based Amorphous phase Phase formation Surfaces Coatings and Films Electronic Optical and Magnetic Materials Amorphous solid Condensed Matter::Materials Science Chemical physics Phase (matter) Metastability Scientific method Materials Chemistry Ceramics and Composites |
| Zdroj: | Ceramics International. 47:19073-19078 |
| ISSN: | 0272-8842 |
| Popis: | In this paper, we report on a new path of ZnWO4 phase formation, synthesized by the polymerizable complex (PC) method. At 550 °C, we obtained a single phase of the ZnWO4 complex oxide. To explain the phase transformation processes, we propose a mechanism based on the coexistence of more than one amorphous phase after the pre-pyrolysis process. These amorphous metastable phases indicate a different phase formation path, which has not yet been described in the literature for multi-component oxides processed by the PC method. The formation path proposed here shows the relevance of the metastable phases in the reaction processes of complex oxides. |
| Databáze: | OpenAIRE |
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